#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
 
int position_x,position_y; 
int bullet_x,bullet_y; 
int enemy_x,enemy_y; 
int high,width;
int score;
 
void startup() 
{
    high=20;
    width=30;
    position_x=high/2;
    position_y=width/2;
    bullet_x=0;
    bullet_y=position_y;
    enemy_x=0;
    enemy_y=position_y;
    score=0;
}
